ӣţţ  ţţ  ţţ  ţţ  ţţƭ  ţţ½  ţţƭ  ţţ  ţţ  ţţ  ţţ  ţţ  ţţ½  ţţƻ  ţţƻ  ţţ½  ţţ  ţţֱ  ţţ¼  ţţ